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<?php
namespace Lightscale\LaralightSvg;
use DOMDocument;
use DOMNode;
use DOMElement;
class SvgSpriteCompiler
{
protected bool $isNew = false;
private DOMDocument $svg;
private DOMNode $defs;
public function __construct(string $svg)
{
$svg = empty($svg) ? $this->newSvg() : $svg;
;
if (!$this->loadSvg($svg)) {
$this->loadSvg($this->newSvg());
}
$this->defs = $this->svg->getElementsByTagName('defs')[0];
}
protected function loadSvg(string $svg): bool
{
$this->svg = new DOMDocument();
return $this->svg->loadXML($svg, LIBXML_NOXMLDECL);
}
protected function newSvg(): string
{
$this->isNew = true;
return '<svg xmlns="http://www.w3.org/2000/svg"><defs></defs></svg>';
}
public function isNew(): bool
{
return $this->isNew;
}
public function getSvg(): string
{
return $this->svg->saveXML(null, LIBXML_NOXMLDECL);
}
public function addSvg(string $name, string $svg): bool
{
$doc = new DOMDocument;
if (!$doc->loadXML($svg)) return false;
$svg = $doc->getElementsByTagName('svg')->item(0);
if ($svg instanceof DOMElement) {
$this->defs->appendChild($this->createSymbol($name, $svg));
return true;
}
else {
return false;
}
}
private function createSymbol(string $name, DOMElement $svg): DOMElement
{
$attributes = ['width', 'height', 'x', 'y', 'viewBox', 'preserveAspectRatio'];
$symbol = $this->svg->createElement('symbol');
$symbol->setAttribute('id', $name);
foreach ($attributes as $attr) {
if ($svg->hasAttribute($attr)) {
$value = $svg->getAttribute($attr);
$symbol->setAttribute($attr, $value);
}
}
foreach ($svg->childNodes as $node) {
$symbol->appendChild($this->svg->importNode($node, true));
}
return $symbol;
}
}
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